Production, Purification, and Characterization of a Major Penicillium glabrum Xylanase Using Brewer's Spent Grain as Substrate

Table 1

Influence of pure carbohydrates and agroindustrial wastes on xylanase production by P. glabrum.

Carbon source; (1% w/v)	Intracellular protein; (mg)	Xylanase activity
		(U/mL)	(U/mg protein)
Pure carbohydrates
Glucose	1.75	0.04	0.07
Xylose	1.04	0.25	0.60
Maltose	0.89	0.06	0.14
Lactose	0.34	ND	ND
Sucrose	1.34	ND	ND
Cellobiose	1.11	ND	ND
Avicel	0.25	ND	ND
CM-cellulose	0.34	ND	ND
Oat spelt xylan	1.98	25.44	64.96
Agroindustrial wastes
Sugarcane bagasse	0.53	8.34	25.14
Wheat bran	1.84	20.54	43.35
Oat bran	1.14	13.54	28.31
Rice straw	1.24	17.65	30.34
Brewer's spent grain	2.10	34.32	102.65
Soybean meal	0.76	8.23	20.43
Corn cobs	0.83	7.32	18.23
Citrus pectin	0.34	0.10	0.34
Orange bagasse	0.38	0.16	0.65